Re: [PATCH 1/1] staging - rtl8188eu: Deletion of unnecessary checks before three function calls

[SF Markus Elfring]

>From 45970693cad6c12da2d5ac7da3d2bd7a566170d7 Mon Sep 17 00:00:00 2001
From: Markus Elfring <elfr...@users.sourceforge.net>
Date: Thu, 23 Oct 2014 20:55:13 +0200
Subject: [PATCH] staging - rtl8188eu: Deletion of unnecessary checks before
 three function calls

The functions kfree(), rtw_free_netdev() and vfree() test whether their
argument is NULL and then return immediately. Thus the test around the call
is not needed.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfr...@users.sourceforge.net>
---
 drivers/staging/rtl8188eu/core/rtw_efuse.c   | 3 +--
 drivers/staging/rtl8188eu/core/rtw_mlme.c    | 3 +--
 drivers/staging/rtl8188eu/core/rtw_sta_mgt.c | 3 +--
 drivers/staging/rtl8188eu/core/rtw_xmit.c    | 6 ++----
 drivers/staging/rtl8188eu/os_dep/usb_intf.c  | 5 ++---
 5 files changed, 7 insertions(+), 13 deletions(-)

diff --git a/drivers/staging/rtl8188eu/core/rtw_efuse.c
b/drivers/staging/rtl8188eu/core/rtw_efuse.c
index 7006088..77f7552 100644
--- a/drivers/staging/rtl8188eu/core/rtw_efuse.c
+++ b/drivers/staging/rtl8188eu/core/rtw_efuse.c
@@ -212,8 +212,7 @@ efuse_phymap_to_logical(u8 *phymap, u16 _offset, u16
_size_byte, u8  *pbuf)
 exit:
        kfree(efuseTbl);

-       if (eFuseWord)
-               kfree(eFuseWord);
+       kfree(eFuseWord);
 }

 static void efuse_read_phymap_from_txpktbuf(
diff --git a/drivers/staging/rtl8188eu/core/rtw_mlme.c
b/drivers/staging/rtl8188eu/core/rtw_mlme.c
index 149c271..df54350 100644
--- a/drivers/staging/rtl8188eu/core/rtw_mlme.c
+++ b/drivers/staging/rtl8188eu/core/rtw_mlme.c
@@ -122,8 +122,7 @@ void rtw_free_mlme_priv(struct mlme_priv *pmlmepriv)
        rtw_free_mlme_priv_ie_data(pmlmepriv);

        if (pmlmepriv) {
-               if (pmlmepriv->free_bss_buf)
-                       vfree(pmlmepriv->free_bss_buf);
+               vfree(pmlmepriv->free_bss_buf);
        }
 }

diff --git a/drivers/staging/rtl8188eu/core/rtw_sta_mgt.c
b/drivers/staging/rtl8188eu/core/rtw_sta_mgt.c
index e1dc8fa..af1de9c 100644
--- a/drivers/staging/rtl8188eu/core/rtw_sta_mgt.c
+++ b/drivers/staging/rtl8188eu/core/rtw_sta_mgt.c
@@ -201,8 +201,7 @@ u32 _rtw_free_sta_priv(struct       sta_priv *pstapriv)

                rtw_mfree_sta_priv_lock(pstapriv);

-               if (pstapriv->pallocated_stainfo_buf)
-                       vfree(pstapriv->pallocated_stainfo_buf);
+               vfree(pstapriv->pallocated_stainfo_buf);
        }

        return _SUCCESS;
diff --git a/drivers/staging/rtl8188eu/core/rtw_xmit.c
b/drivers/staging/rtl8188eu/core/rtw_xmit.c
index 639ace0..011c9cf 100644
--- a/drivers/staging/rtl8188eu/core/rtw_xmit.c
+++ b/drivers/staging/rtl8188eu/core/rtw_xmit.c
@@ -246,11 +246,9 @@ void _rtw_free_xmit_priv (struct xmit_priv *pxmitpriv)
                pxmitbuf++;
        }

-       if (pxmitpriv->pallocated_frame_buf)
-               vfree(pxmitpriv->pallocated_frame_buf);
+       vfree(pxmitpriv->pallocated_frame_buf);

-       if (pxmitpriv->pallocated_xmitbuf)
-               vfree(pxmitpriv->pallocated_xmitbuf);
+       vfree(pxmitpriv->pallocated_xmitbuf);

        /*  free xmit extension buff */
        pxmitbuf = (struct xmit_buf *)pxmitpriv->pxmit_extbuf;
diff --git a/drivers/staging/rtl8188eu/os_dep/usb_intf.c
b/drivers/staging/rtl8188eu/os_dep/usb_intf.c
index 407a318..cdb70e4 100644
--- a/drivers/staging/rtl8188eu/os_dep/usb_intf.c
+++ b/drivers/staging/rtl8188eu/os_dep/usb_intf.c
@@ -456,7 +456,7 @@ free_adapter:
        if (status != _SUCCESS) {
                if (pnetdev)
                        rtw_free_netdev(pnetdev);
-               else if (padapter)
+               else
                        vfree(padapter);
                padapter = NULL;
        }
@@ -487,8 +487,7 @@ static void rtw_usb_if1_deinit(struct adapter *if1)
        DBG_88E("+r871xu_dev_remove, hw_init_completed=%d\n",
                if1->hw_init_completed);
        rtw_free_drv_sw(if1);
-       if (pnetdev)
-               rtw_free_netdev(pnetdev);
+       rtw_free_netdev(pnetdev);
 }

 static int rtw_drv_init(struct usb_interface *pusb_intf, const struct
usb_device_id *pdid)
-- 
2.1.2


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